吴廷光, 舒小勇, 李贵发, 郑海忠. 不同碳材料对铜基复合材料组织和性能影响研究[J]. 南昌航空大学学报(自然科学版), 2017, 31(1): 22-27,60. DOI: 10.3969/j.issn.1001-4926.2017.01.004
引用本文: 吴廷光, 舒小勇, 李贵发, 郑海忠. 不同碳材料对铜基复合材料组织和性能影响研究[J]. 南昌航空大学学报(自然科学版), 2017, 31(1): 22-27,60. DOI: 10.3969/j.issn.1001-4926.2017.01.004
WU Ting-guang, SHU Xiao-yong, LI Gui-fa, ZHENG Hai-zhong. Effects of Different Carbon Materials on Microstructure and Properties of Copper Matrix Composites[J]. Journal of nanchang hangkong university(Natural science edition), 2017, 31(1): 22-27,60. DOI: 10.3969/j.issn.1001-4926.2017.01.004
Citation: WU Ting-guang, SHU Xiao-yong, LI Gui-fa, ZHENG Hai-zhong. Effects of Different Carbon Materials on Microstructure and Properties of Copper Matrix Composites[J]. Journal of nanchang hangkong university(Natural science edition), 2017, 31(1): 22-27,60. DOI: 10.3969/j.issn.1001-4926.2017.01.004

不同碳材料对铜基复合材料组织和性能影响研究

Effects of Different Carbon Materials on Microstructure and Properties of Copper Matrix Composites

  • 摘要: 本研究以石墨片、碳纳米管、石墨烯和氧化石墨烯为增强碳材料,采用复压复烧法制备了质量分数为0.5%的不同碳材料/铜复合材料,并分析了各复合材料的显微组织、相对密度、显微硬度与拉伸性能。微观组织观察表明,石墨片、碳纳米管和石墨烯在复合材料中均存在团聚,而氧化石墨烯的分散性较好。纯铜及不同碳材料/铜复合材料的相对密度较高,其值均在96.74%以上。不同碳材料/铜复合材料的显微硬度均高于纯铜,除石墨/铜外,其余碳材料/铜复合材料的抗拉强度均大于纯铜,主要强化机制为细晶强化和位错强化。然而由于碳-铜的结合力较弱,所有碳材料/铜复合材料的断后伸长率均小于纯铜。综合比较发现,以氧化石墨烯为增强材料制备的还原氧化石墨烯/铜复合材料的性能最佳,其相对密度、显微硬度、抗拉强度均为最大,分别为99.04%、71.2 HV、229.22 MPa,断后伸长率达到了66.8%。

     

    Abstract: In this paper, the 0.5 wt.% different carbon materials/copper composites reinforce with graphite, carbon nanotubes, graphene and graphene oxide were prepared by repressing and resintering process, and the microstructure, relative density, micro-hardness and tensile properties of composites were studied. The microstructure observation indicates that the graphite, carbon nanotubes and graphene are agglomerated in the composites, while graphene oxide is uniformly dispersed in the matrix. The relative density of pure copper and carbon/copper composites is all higher than 96.74%. The micro-hardness of carbon/copper composites is higher than pure copper. The tensile strength of the composites is higher than that of pure copper due to fine grain strengthening and dislocation strengthening, except for graphite/copper composite. However, the elongation of composites is less than that of pure copper because of the weak binding capacity of carbon-copper. By comprehensive comparison, it is found that the composite reinforce with graphene oxide obtains the best performance:the relative density, micro-hardness, tensile strength and elongation were, respectively, 99.04%, 71.2 HV, 229.22 MPa and 66.8%.

     

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